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  • 1
    Electronic Resource
    Electronic Resource
    Phonon-polariton interaction in a microcavity (1995)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 17 (1995), S. 1657-1662 
    Details
    ISSN: 0392-6737
    Keywords: Excitons and related phenomena (including electron-hole drops) ; Polaritons (including photon-phonon and photon-magnon interactions) ; Dynamics of nonlinear optical systems ; optical instabilities, optical chaos, and optical spatio-temporal dynamics ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary The linewidth of the microcavity exciton polariton is studied by onresonant and off-resonant photoluminescences. The two main contributions to the linewidth are caused by radiative loss and phonon scattering. The oscillator strength is found to be unmodified by the exciton-phonon coupling. Comparison is made between theory and experiment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457259
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  • 2
    Electronic Resource
    Electronic Resource
    Tunneling spectroscopy for quantum well excitons (1997)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 70 (1997), S. 1986-1988 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have demonstrated a technique of directly measuring the exciton binding energy and the valence band split in the quantum well through a tunneling process. We have also measured the emission efficiency of quantum well heavy-hole excitons and light-hole excitons into the normal direction. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.118800
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  • 3
    Electronic Resource
    Electronic Resource
    Vacuum field induced mixing of light and heavy-hole excitons in a semiconductor microcavity (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 69 (1996), S. 3465-3467 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Measurements in a semiconductor microcavity reveal the coupling between light- and heavy-hole excitons that is mediated by the electromagnetic vacuum. Three polariton modes constructed from superpositions of heavy-hole excitons, light-hole excitons, and photons are observed. The experimental results are in good agreement with the theory of three-coupled bosonic modes, each coupled to an independent reservoir. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.117253
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  • 4
    Electronic Resource
    Electronic Resource
    Observation of dressed-exciton oscillating emission over a wide wavelength range in a semiconductor microcavity (1995)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 66 (1995), S. 1107-1109 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have observed the dressed-exciton oscillating emission in the time domain and the associated spectral splitting in the frequency domain from a GaAs single quantum well microcavity over a very broad range of cavity resonant wavelengths. The spectral splitting and temporal oscillation period have been measured to be nearly constant over two orders of magnitude variation of pump intensity, which confirms the linear bosonic feature of Wannier excitons in the weak excitation regime. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.113827
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  • 5
    Electronic Resource
    Electronic Resource
    Quantum limit for the atom-light interferometer (1995)
    Springer
    Applied physics 60 (1995), S. 187-191 
    Details
    ISSN: 1432-0649
    Keywords: 42.50.Dv ; 03.75.Dg ; 03.75.Fi
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The standard quantum limit is calculated for the atom-light interferometer. It is shown that the smallest detectable phase is $$\delta \phi _{\min } = \frac{1}{2}[N_{atoms} + 4N_{photons} )/N_{atoms} N_{photons} ]^{1/2} .$$ Therefore, in practical experiments, the accuracy is limited by the square root of the number of atoms. We propose a novel correlated atom-photon state interferometer which makes a transition to the Heisenberg limit, δφmin ∝ 1/N atoms, as the atoms approach a Bose condensate. Such an interferometer may serve as a sensitive probe of the onset of Bose condensation. Finally, we point out that the correlated atom-photon state preparation scheme we propose may be used in a different way to approach the Heisenberg limit for non-Bose-condensed atoms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01135861
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  • 6
    Electronic Resource
    Electronic Resource
    Micro-cavity semiconductor lasers with controlled spontaneous emission (1992)
    Springer
    Optical and quantum electronics 24 (1992), S. S215 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The principle and applications of quantum electrodynamics in microcavity semi-conductor lasers are reviewed. The coupling efficiency of spontaneous emission into a lasing mode and the spontaneous lifetime are modified by various microcavity structures. As a consequence of the increased coupling efficiency, those microcavity semi-conductor lasers are expected to feature a low threshold current, high quantum efficiency and broad modulation bandwidth. One remarkable result of the increased coupling efficiency is ‘lasing without inversion’. The other is ‘intensity squeezing at any pump rate’.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00625826
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  • 7
    Electronic Resource
    Electronic Resource
    Frühbehandlung von Kindern mit Lippen-Kiefer-Gaumen-Spalten (1986)
    Springer
    Journal of orofacial orthopedics 47 (1986), S. 380-384 
    Details
    ISSN: 1615-6714
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary A modified baby plate is used in the treatment of new born children with cleft lip and palate. In order to avoid tissue damage of the vomer and to achieve a maximal growth effect the cleft region is left free of acrylic. Retention of the plate is attained through the use of proprietary denture adhesive. To avoid undesirable breathing disturbances the plate is extended progressively into the soft palate region.
    Abstract: Résumé Nous avons traité des nouveaux nés présentant des fentes labiopalatines en utilisant une plaque palatine modifiée. Lors de la fabrication de cette plaque palatine, il est important de laisser libre d'acrylique la région de la fente. Par ce moyen, on évite des lésions de la muqueuse et on peut atteindre un effect de croissance maximal. Pour éviter des difficultés respiratoires indésirables, la plaque est allongée progressivement vers le voile du palais.
    Notes: Zusammenfassung In der Behandlung von neugeborenen Kindern mit Lippen-Kiefer-Gaumen-Spalten wird eine modifizierte Oberkieferplatte verwendet. Ein wichtiger Punkt bei der Herstellung dieser Platte ist, daß der Spaltbereich von Kunststoff frei bleibt. Hierdurch werden Verletzungen der Schleimhaut vermieden, und es besteht die Möglichkeit, einen maximalen Wachstumseffekt zu erzielen. Die Retention der Platte wird allein durch Anwendung von Haftpulver sichergestellt. Um unerwünschten Atemstörungen zu begegnen, erfolgt die Ausdehnung der Platte in den weichen Gaumen schrittweise.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02163122
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  • 8
    Electronic Resource
    Electronic Resource
    Solid-state single photon sources: light collection strategies (2002)
    Springer
    The European physical journal 18 (2002), S. 197-210 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 03.67.Dd Quantum cryptography – 42.79.Gn Optical waveguides and couplers – 12.20.-m Quantum electrodynamics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: We examine the problem of efficiently collecting the photons produced by solid-state single photon sources. The extent of the problem is first established with the aid of simple physical concepts. Several approaches to improving the collection efficiency are then examined and are broadly categorized into two types. First are those based on cavity quantum dynamics, in which the pathways by which the source may emit a photon are restricted, thus channeling emission into one desired mode. Second are those where we try to reshape the free space modes into a target mode in an optimal way, by means of refraction, without fundamentally altering the way in which the source emits. Respectively, we examine a variety of microcavities and solid immersion lenses. Whilst we find that the micropillar microcavities offer the highest collection efficiency (∼70%), choosing this approach may not always be appropriate due to other constraints. Details of the different approaches, their merits and drawbacks are discussed in detail.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjd/e20020024
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  • 9
    Electronic Resource
    Electronic Resource
    Comprehensive experimental test of quantum erasure (2002)
    Springer
    The European physical journal 18 (2002), S. 251-258 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 03.65.Ta Foundations of quantum mechanics; measurement theory – 42.50.-p Quantum optics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: In an interferometer, path information and interference visibility are incompatible quantities. Complete determination of the path will exclude any possibility of interference, rendering zero visibility. However, it is, under certain conditions, possible to trade the path information for improved (conditioned) visibility. This procedure is called quantum erasure. We have performed such experiments with polarization-entangled photon pairs. Using a partial polarizer, we could vary the degree of entanglement between the object and the probe. We could also vary the interferometer splitting ratio and thereby vary the a priori path predictability. This allowed us to test quantum erasure under a number of different experimental conditions. All experiments were in good agreement with theory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjd/e20020030
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